Home / 12,385.13-17,091.75-7,080.44

Finding the Fourth Proportional to 12,385.13, 17,091.75 and 7,080.44

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Solution

The fourth proportional to 12,385.13, 17,091.75 and 7,080.44 is: 9,771.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.13 : 17,091.75 = 7,080.44 : x
  2. Step 2: Convert to fraction form
    12,385.13/17,091.75 = 7,080.44/x
  3. Step 3: Cross multiply
    12,385.13x = 17,091.75 × 7,080.44
  4. Step 4: Simplify right side
    12,385.13x = 121,017,024.91
  5. Step 5: Solve for x
    x = 121,017,024.91/12,385.13
  6. Step 6: Final answer
    x = 9,771.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.